Shoe-calk sharpener



(No Model.) Y

J. H. CUNNINGHAM.

SHOE' GALK SHARPENER.

No. 296,392.- Patemed Apr. 8, 1,884.

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JOHN H. CUNNINGHAM, OF ETNA, ASSIGNOIt TO HIMSELF, AND VILLIAM M. FLAHAVEN, OF ALLEGHENY, PENNSYLVANIA.

SPECIFICATION forming part of Letters Patent No. 296,392, dated Aprila, 1884.

Application filed January 1l, 1884. (No model.)

Figure l is a plan view. Fig. 2 is a crosssection through the line :0, Fig. l. Fig. 3 is a cross-section on the line y y, Fig. l.

Like letters of reference indicate like parts wherever they occur.

The object of my invention is to provide a simple and durable tool for sharpening horseshoe calks and producing a sharp angular edge on tools and other articles; and it consists in a pair of tools-such as tiles, rasps, or-

other like device-held at each end by'clamps, one or both of said clamps being composed of two rigid leaves having V-shaped grooves for the reception of the ends of the illes, and provided with an extension or handle, so that the tools may be conveniently held by the workman,while the les are retained in their proper relative position to each other.

I will now describe my invention, so that others skilled in the art may manufacture and use the same. Y

In the drawings, a I) represent the two clamps, which secure the illes c c at the ends thereof in their` proper position. The clamp c is formed of two pieces or leaves, c a', in

which are formed the V-shaped grooves d d, y

clamp, t, is formed in a single piece, having the diamondshaped cavities z', into which the set-screw k passes through a threaded hole in the clamp.

The files c c, which form the cutting portion of the tool, may be of the usual form, having angular ends adapted to it in the cavities d d and i i, the bodies of the files lying parallel to each other, so asto form a V- shaped cutting-surface, there being a slight space between the edges of the les.

The clamps a I) are preferably formed of cast metal, which is cast in molds of suitable v ing the sharp and rough edges of the iiles, l

and also to aid in securing the files in position.

I am aware that files side by side and secured by a jointed handle have been used heretofore, and also that tools have heretofore been adj ustably secured in clamps or handles. The advantages of my invention, however, arethat the tool produced is simple, light, and

also that the tool as formed by me is much more easily handled than devices heretofore employed for the same purpose, and that the work of sharpening calles and other articles is much more perfectly and easily accomplished, owing to the rigidity of the files in position when secured by the clamps.

Having thus described my invention, what I claim, and desire to secure by Letters Patent,

is- I 1. In a tool for sharpening callas and other articles, the combination, with two files ar- 'ranged parallel, of a clamp-handle composed of two plates or leaves, each provided with two parallel V shaped grooves for the reception of the adjacent ends of the files, and devices for securing the leaves -or plates together, substantially as and for the purposes specified.

2. In a tool for sharpening calks and other articles, the combination, with two iiles arranged parallel, of a handle provided with clamping-plates for securing the adjacent ends of the tiles at one extremity of the tool, and a detachable hand-rest provided with devices for clamping the adjacent ends of the ile at IOO the opposite extremity of the tool, substanl In testimony whereof I have hereunto set 1o tially as and for the purposes specified. 'my hand this 5th day of January, A. D. 1884:.V

3. In a tool for sharpening calks and like articles, the combination, with two files ar- JOHN H. CUNNINGHAM.

5 ranged parallel, of a detachable clamp for securing the adjacent ends of the two files, said Witnesses: clamp provided With a handle which extends W. B. CORWIN, in the axis or line of the files, substantially as JAMES K. BAKEWELL. and for the purposes specified. 

